Machine fob making wektoow-eitvelops



C. F. PFLANZE.

MACHIN FOR. MAKING WINDOW ENVELOPS.

APPLICAHON man oc. 8. |911.

1,361,545, Patented Dee. 7,1920.

5 SHEETS-SHEET l.

c. F. PFLANZE. MCHINE FOR. MAKING WINDOW ENVELPS.

APPLICATION FILED OCT. 8. 19H.

1,361,545, Patented Dec. 7, 1920.

5 SHEETS-SHEET 2.

` C. F. PFLANZE.

MACHINE FOR MAKING WINDOW ENveLoPs.

lAPPLICATION FILED OCT' 8| |917.

Pa d .7,

.4 z/jf. E I

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CHARLES F.

retenes,

0F ST.

IVLISSOU'RI.

Louis,

uscirne.

Specification of Letters Patent.

ltntentedec. *7, 1920.

Application led ctober 8, 1917. Serial No, 195,293.

o all whom may concern.'

Be it known that l, CHARLES F. PFLANZE, a citizen oi the Unite( States ot America, a resident ot the city oit Sitw liouis7 in the Lltate ot Missouri, lieve invented certain new and useful lmproveinents in Machines for Male ing 1W inflow-Envelope, oic which the tollowing' is a full, clear, and exact description, reference being had to the accoinpanyinp` drawings, lorniinp` :i part ot this specilicfv tion.

This invention relates to on impro \f'ed inechine for makingw Window envelops, one ot the objects being to iirmly secure transparent potches to the mitrpins ci? the 'Windows 'llhis is accomplished by maintaining the patch und e `gggunnned envelop lfilenl under 'pressure for u considerable period ot time, thereby causing' the patch to adhere firmly to the gummcd margins of' 'the window. rlfhe per-tch and tl e envelop blank ero prei"- orebly maintained under pressure between two tiet plates, lorgrer in urea than the patch, so that the prolonged pressure is obtained :it all olf the guinnicd oit the Windovv.

[another object is to accomplish the loro 1going result while the window envelop blzinli is in motion, traveling from one part oi the machine to a nother, so that the successive envelop termine' operations een be performed continuously.l Without liieing delayed by the petclrpressinfr operations. 'llhe several opc-.rations;y such es grumminp'. creasing' end folding' the envelop blanks, can. be performed most conveniently by leepi th lilenhs in niotioin continually teedingr th lfrom one device to enc-then so to avoid the deluys which would otherwise be caused by stopping; the blanks at the different' dcvices.

l therefore meintein the lsumined blank end patch under pressure.y While they are traveling through machine. During; the pressing; operation.. jthe flot pressure plates travel with the hln nl: sind patch, so the inotien ot the blanks through the machine will not be retarded by the prolonged pressure to which the blenlr end patch are subjected.

l do not deem it necessary to show any means ttor performing; the operations ol' vfolding` and creasing' the window envelop blank. The present invention relates entircly to e method ot and ineens lor applying patches to the envelop Windows. ane the other elements ot the envelop making apparatus muy be constructed in any suitable manner.

YFigure l is a vertical section ot a. portion of en envelop making machine, showing; the neivpetch epplyingdevices.

ll is un enlarged iront elevation. partly in section, showing' the upper por-l tion oli the machine, V

Fig. lll is a vertical section taken approxnnetely through the center of the struc ture shown in Fig. ll. l `Fig. llT is u ding'rammatical view showing' the revolving` pressure members cnid an envelop bla-nk arranged between two of said members.

Fig. V is n view similar to Fig. lll', showinp; the envelop blank pressed between two ot' the pressure members.

l? lll is e, side elevation of the machine7 showing thetdriving mechanism.

Fig. lll is :i detail view ot the grumining' roll. n

lD Vlll is a view similar to Fig. lV, illustrating e, modification.

rllo illustrate the invention l lieve shown o pressing' device including;v that pressure plates l and. 2 secured to rotsry carriers A and ll, respectively. vllfuizli olt the rotary czfirriers comprises eri .s 3 supported by e stationery shzitt :rrd the ilat pressure plates nre pivotech :it l to siii/l arms il, the pivots passino tliroioh things-s which extend from the pre ire plates. The pressure plates revel 'e about the :mes ot the stutionary sliet'ts1 es will be hereinafter described, ond sind prcsinue plates ere free to turn on their pivots 5 so es to lie parallel with each other duringthe pressing opera tiemy in' shown in Fig. V. rlhe envelop @sing to the pressure plates treve. in the path indicated by arrows in Fig. lt travels from 'pair olrotating; feed rolls 6. to o rrumniingr roll 7 arranged above a feed roll 8, sind thence to the pressure plates. The Window envelop blank is designated by the character X in Figs. lV and V, and the summing; roll 7 is shown most clearly in Fig. VH. A pum receptacle 9 (Fig. l) is provided with e, gum delivering; roll l0 contacting with a gum transferring` roll l1, the latter being' in contact with o. roll l2 whereby the gum is transferred to the roll. 7. This gummingV roll 7 VH) is provided with raised surfaces 13 end 11i whereby the rum is received from the transferring roll l2 end impressed upon the en connects the arm t3 to a rigid arm L16, the latter being rigidly secured to thev pressure plate l. rifhe spring` so, pulling` on the arm LLB, tends to close the giriil'ipinp,l fingers i9 on the patch Z, but when the sarts' occupy' the positions shown in Fie'. lll the roller on the arm lf3 engages the cam l-lso as to retain the gripping` lingers l@ in their open positions. By referringn to Fig'. ll, it Will be observed that the gripping lingers 19 lie adjacent to the ends ot the transi'iarent patch Z, and the pressure plate l is recessed to receive the gripping` lingers as shown at 47 in Figs. ll and lll.

liilhen the patch il' is released trom the j aws and 23 the arm l?, passes trom the sta tionary cani lill, and the spring l5 then actuates the arm 43, shaft 462. and `gripping lingers 19, so as to torce said grippinglingers into the recesses di", thereby irmly securing` the transparent patch to the gripping plate l.

l ll ot this is accoi'npl'ished while the grip pingplate l is travelingl continuously in itsv endless path around the axis ot the upper shatt t The transparent patch Z is carried to the 'window openingin the envehn) blank l, as shown diaggraminatically in Figs. IV and V. l/Vhen the coperatinicg pressure platos l and 2 pass away troni each other, the gripping fingers 19 are actuated. to release the blank and patch trom the gripping;4 plate l. This is accomplished Ween the arm t3 again reaches the stationary cam all, at which time the arm sli-l is actuated by engaging the stationary cam so as to more the grippine` lingers 19 away trom the pressure plate l.A l have not shown the means tor folding` and creasing' the blank, nor any ot the devices-to which the blank is delivered after it passes trom the pressure plates, or such devices may be constructed in any suitable manner, the present invention beine' based entirely upon the method ot and means tor applying the patches to the Window open- 'When the pressure plates l and 2 occupy the positions shown in Fig. TV, the Window envelop blank X is ,grriiiiiped between corners oi the opposing; plates l and 2, and immediately thereafter the pressure plates l and El are turned on the axes ot their pivots 5 so as to lie parallel with each other, as shown .in

li V. As will be hereinafter described, thi.,- s accomplished Without stoplnno or retore very lirinly secured to the blank and it is not liable to loosen during;` the subsequent envelop makingv operations, nor when the envelop is eventually transmitted through the mail. rllhe means ,tor turning the plates l. and 2 on the axes ot their pivots 5 coniprises Stationary cams 4:9 (Figs. l and ll) iixed tomi-,he stationary shatts Ll, cam actu ated arms 50, pivoted at 5l to the carrier arms il., each arm 50 being` provided with a roller 50, and springs 52 connected to the arms 5() so as to retain their rollers 50 in engagement With the stationary cams 49. When the opposing pressure plates occupy their operative positions on opposite sides ot' the blank and patch, the rollers 50 associated With said plates travel. along` the irregular portions ot the stationary cams L19, and motion is then transmitted troni said rollers to the adjacent arms 50, and thence through links 5st whereby the arms 50 are connected to the pressure plates. rlfhe cams #i9 and the arms 50 are so constructed and arranggged that the pressure plates l and 2 will lie parallel. with each other during` the pres np; operations.

lillhile the tlat pressure plates are copervvith each other to press the patch onto the gummed blank, they travel about the axes ot the shafts il, and since said tlat plates are parallel with each other during the pressing` operation, at least one ot the plates must move toward the axis on which it revolves. ln other words, it the opposing plates are to lie parallel with each other during; the prolonged pressing operation they cannot both travel in absolutely truc circular paths. The plates l ot' the rotary carrier A are therefore yieldingly secured to the carrier. Each plate l is located adjacent to :i plate l1 provided. with pockets 55 Jfor the reception ot pins 56 Which extend troni the plate l. The pins 56, are slidably mounted in the pockets 55, and secured by headed retaining screws 5'? Il) passing' throng-,li the end Walls ot the pockets. Springs 58, arranged in the pockets 55, bear against the ends ot pins 56.

he d rivinp mechanism herein shown comprises rotatable sleeves 59 (Figs. ,ll and Vl) surrouriding3 the stationary shafts Ll, and secured to the arms B at one side of the rotary presure plate carriers. Large gear Wheels .ii/l. secured to the sleeves 59, mesh with each other as shown in Vl, and poirier may be trai'isinittod to these Wheels in any suitable manner. rlhe cutting' rolls 16 (Figs. l, ll and Vl), near the upper portion ot the machine, are provided with gear Wheels 6l which mesh with each other, and a sprocket Wheel G2 is secured to a shait extending' trom one ot the rolls 16 64 designates a sprocket chain 'for transmitting power from a Wheel 65 on a sleeve 59 to the sprocket Wheel 62. 'lhe cam 38, t'or actuating the transferring device, is driven by a chain 66 (Figs. II and VI) which transmits power from a sprocketV wheel 67 on the shaft 63 to 'a sprocketwheel 68 on the cam shaft 39.

F ig. VIII is a diagrammatical view illustrating a modification wherein a constantly rotating carrier A', similar to the carrier A, is provided with flat pressure plates .1', corresponding to the plates l. The pivots 5 correspond to the pivots 5. A constantly traveling endless belt 70 is arranged below the rotary carrier so as to cooperate with the fiat plates l in applying the transparent patch Z to the window envelop blank X. A stationary board or table 7l prevents the belt 70 from sagging under the pressure of the flat plates l. In this modified structure, the belt 70 and pressure plates l travel with the interposed blank and patch during the pressing operation.

I claim:

l. In a machine for making window envelops, traveling patch applying mechanism comprising a pair of flat faced traveling pressure members whereby the patch and window envelop blank are simultaneously advanced and forced into engagement with each other, rotary means for feeding window envelop blanks to both of said traveling pressure members, means for feeding patches to one of said traveling pressure members, and means for moving said flat faced traveling pressure members in noncircular pathsl and toward and away from each other.

2. In a machine for making window envelops, traveling patch applying mechanism comprising a pair of traveling pressure members whereby the patch and window envelop blank are firmly forced into engagement with each other, said traveling pressure members being movable toward and away from each other, means for securing patches to one of said traveling pressure members, and means for feeding window envelop blanks into the space between the traveling pressure members.

3. In a machine for making window envelops, traveling patch applying mechanism comprising a pair of traveling flat faced pressure members whereby `the patch and window envelop blank are firmly forced into engagement with each other, means for feeding patches to the fiat face of one of said traveling pressure members, means for securing the patches tol said fiat face, and means for feeding window envelop blanks to the traveling pressure members.

4. In a machine for making window envelops, patch applying mechanism comprising oppositely disposed pressure members, means for delivering the blank and patch to said pressure members, said means including feed rolls whereby the blank is fed between said pressure members and a transferring device whereby the patch is delivered to one of said pressure members, one of said pressure members being movable toward the other to firmly press the blank and patch into engagement with each other, and means for advancing said pressure members in a line parallel with the path of the interposed patch and blank so as to maintain the traveling patch and blank under pressure.

5. In a machine for making window envelops, patch applying mechanism comprising oppositely disposed fiat faced pressure members, means for delivering the blank and patch to the flat faces of said pressure members, said means including feed rolls whereby the blank is fed between said fiat faces and a transferring device whereby the patch is delivered to one of said fiat faces, one of said pressure members being movable toward the other to firmly press the blank and patch between the fiat faces, and means for advancing said pressure members in noncircular paths with the blank and patch between their fiat faces, so as to maintain the traveling blank and patch under pressure.

6. In a machine for making window envelops, traveling patch applying devices revolving about different axes and coperating with each other to force the patch into engagement with the window envelop blank, each of said traveling patch applying devices including a rotary carrier, a fiat faced pressure member pivotally secured to said carrier and means for turning the pressure member on the axis of its pivot, to provide for a non-circular motion about the axis of rotation, the fiat faces of the revolving pressure members being parallel with each other when the blank and patch are pressed between them, means for delivering patches to the fiat face of one of said pressure members, and means for feeding envelop blanks into the space between said pressure members.

7. In a machine for making window envelops, patch applying mechanism comprising fiat faced pressure members revolving about different axes and coperating with each other to firmly press the patch into engagement with the blank, means for feeding patches toone of the pressure members, means for securing the patches to the last mentioned pressure member, and means for feeding window envelop blanks to the fiat faces of said pressure members, said pressure members being yieldingly supported and free to remain in parallelism as they travel with the blank and patch during the pressing operation.

8. In a machine for making window envelops, patch applying devices comprising coperating pressure members traveling with the patch and window envelop blank so as to maintain the traveling patch in firm engagement With the traveling envelop blank, means for feeding patches to one of said pressure members, a patch holder carried by the last mentioned pressure mem- 5 ber, and means for moving the pressure members toward and away from each other.

9. ln a machine for making Window en velops, patch applying mechanism comprising flat faced pressure members traveling 10 with the patch and Window envelop blank and coperating With each other to maintain the traveling blank and patch under pressure, rotary carriers to Which said flat faced pressure members are yieldingly se- 15 cured, said rotary carriers being movable about different axes to move said flat faced pressure members toward and away from each other, a transferring device whereby the patches are delivered to one of said pressure members, a patch gripping devicemounted in the last mentioned pressure member, means for closing said patch grip* ping device on the patch delivered from said transferring device, means for opening said patch gripping deviceA to release the patched blanks, and means Jfor feeding gummed Window envelop blanks to the fiat faces of the traveling pressure members.

ln testimony that l claim the foregoing l hereunto afiix my signature.

CHARLES F. PFLANZE. 

